Investigation of thermal behavior of Heliotropium indicum L. lyophilized extract by TG and DSC

Costa, Russany Silva da; Negrão, Charles Alberto Brito; Camelo, Sarah Regina Pereira; Ribeiro-Costa, Roseane Maria; Barbosa, Wagner Luiz Ramos; Costa, Carlos Emmerson Ferreira da; Júnior, José Otávio Carréra Silva

doi:10.1007/s10973-011-2088-2

Cited by 36 publications

(18 citation statements)

References 11 publications

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“…The final event representing a weight loss of 11.7% refers to the oxidation of carbonaceous materials and the formation of ash. 30 From the collected data, we might conclude that the thermal decomposition of DPP flour occurred in a progressive way owing to the difference in the stability of different components against thermal treatment.…”

Section: Thermal Propertiesmentioning

confidence: 96%

“…This weight loss was due to successive thermal degradation reaction of carbohydrates and organic compounds, such as triterpenes, alkaloids, and flavonoids. 30 In the fourth step, 27% of the total weight was lost between 275 °C and 400 °C. This was the result of a complete decomposition of carbohydrates, the beginning of the carbon formation and the elimination of volatile materials.…”

Section: Thermal Propertiesmentioning

confidence: 99%

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Physico-Chemical, Surface and Thermal Properties of Date Palm Pollen as a Novel Nutritive Ingredient

Sebii¹,

Karra²,

Bchir³

et al. 2019

Adv Food Technol Nutr Sci Open J

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Cite this articleSebii H, Karra S, Bchir B, et al. Physico-chemical, surface and thermal properties of date palm pollen as a novel nutritive ingredient. Adv Food Technol Nutr Sci Open J. 2019; 5(3): 84-91. BackgroundDate palm pollen (DPP) is a natural product well-known in folk medicine in the Arab world. It is used to improve the fertility of human beings and studies have tested this activity on rabbits and rats. In the region of Sfax from Tunisia, a huge quantity of DPP could be discarded. Taking into account of the richness of this typical product of different components and of the trend of producing food supplements that could be sold at medium price comparing with the existing product, DPP was analyzed on the basis of physical and chemical properties in order to promote its use as a techno-functional ingredient in the agri-food and pharmaceutical field. ResultsX-ray diffraction showed that DPP is characterized by an amorphous structure which leads to better techno-functional properties while stored in a water-air-tight container. Findings proved that DPP is capable to reduce the surface tension. Collected data from thermal analysis proved that DPP is thermally stable during storage and in different food systems. ConclusionThe present study demonstrated that DPP could be used in the agri-food and pharmaceutical field. The obtained results help to define the suitable storage conditions of DPP and to predict its behavior when used as an ingredient. DPP can be used as a whole in food formulations or after extracting protein which is the main responsible agent for surfactant property. DPP proteins might be used as a food supplement in commercial sports nutrition products that can be sold at medium prices compared to some existing products.

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Section: Thermal Propertiesmentioning

confidence: 96%

Section: Thermal Propertiesmentioning

confidence: 99%

Physico-Chemical, Surface and Thermal Properties of Date Palm Pollen as a Novel Nutritive Ingredient

Sebii¹,

Karra²,

Bchir³

et al. 2019

Adv Food Technol Nutr Sci Open J

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“…This moisture content is in accordance with the criteria of the Brazilian Pharmacopoeia, which establishes for the control of plant material a limit of 14% as the maximum acceptable amount of moisture. The TG is an effective technique to determine the moisture content of the plant and, with these results, it is possible to establish physical parameters for an efficient drying and proper preservation of the material [41]. In addition, impurities present in plant extracts have a direct effect on the width of peaks obtained in the endothermic process [41,42].…”

Section: Discussionmentioning

confidence: 99%

Antifungal Activity, Phytochemical Characterization and Thermal Profile of Anadenanthera colubrina (Vell.) Brenan

Rocha

Medeiros²,

Rosalen³

et al. 2017

Pesqui. bras. odontopediatria clín. integr.

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Objective: To investigate the antifungal potential of A. colubrina, and its phytochemical characteristics, thermal profile and toxicity. Material and Methods: To assess potential antifungal activity, the technique of microdilution was used with the determination of the Minimum Inhibitory Concentration and Minimum Fungicidal Concentration, using standard species of Candida and recent clinical isolates of Candida albicans. Analyses of action of the extract were performed on the wall and cell morphology of C. albicans, of the interactive effect between the plant extract and nystatin on C. albicans through the checkerboard method, and of growth kinetics. The phytochemical screening was determined by spectrophotometry. The thermal profile was traced with the determination of thermogravimetric curves (TG) and differential scanning calorimetry (DSC). The toxicity was evaluated by the method of hemolysis. Results: The extract of A. colubrina showed a fungistatic potential against all bacteria tested and it acted by modifying the cellular morphology of C. albicans. There was a synergism between nystatin and the plant extract (FIC=0.375), and 53.18% of total polyphenols were determined. The TG curve showed the occurrence of three steps of thermal decomposition. None of the tested concentrations became the effective cytotoxic concentration. Conclusion: Further studies should be conducted to understand the efficacy and the mechanisms of action involved in the antifungal activity of the plant extract of A. colubrina in order to produce a new drug for the treatment of oral candidiasis.

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“…Its micro-thermobalance measures any change in the mass of the sample associated with, oxygen adsorption, thermal degradation, oxidation, or other reactions. This change in the mass of the sample may indicate degradation, and in some cases it can also refer to increase of mass [50,53].…”

Section: Thermogravimetric Profilementioning

confidence: 99%

Polyacrylamide-Metilcellulose Hydrogels Containing Aloe barbadensis Extract as Dressing for Treatment of Chronic Cutaneous Skin Lesions

et al. 2020

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Chronic wounds are severe breaks in the skin barrier that fail to heal in an acceptable time-frame, thus preventing the complete restoration of the tissue’s anatomical and functional integrity, increasing the likelihood of infections and apoptosis. Hydrogels are known as a drug delivery system and have the potential to cover wounds and burns on the skin. Aloe barbadensis contains over 75 different bioactive compounds which are responsible for its anti-inflammatory and antimicrobial properties. In this study, the polyacrylamide-co-methylcellulose hydrogel containing Aloe barbadensis were developed. The extract was prepared from lyophilized Aloe barbadensis, using methanolic extraction, characterized by high performance liquid chromatography and incorporated into the hydrogels. These Aloe barbadensis hydrogels were characterized by degree of swelling, Fourier-transform infrared spectroscopy, scanning electron microscopy, and thermal profiling using thermogravimetric analysis. The minimum inhibitory concentration test was done on the Aloe barbadensis extract to evaluate its antibacterial and antifungal activity in vitro. The Aloe barbadensis hydrogels and were shown to swell to almost 2000% of their original sizes. The Fourier-transform infrared spectroscopy indicated the presence of bands characteristic of Aloe barbadensis and hydrogel polymers. The basic hydrogel showed greater thermal stability than the hydrogels with Aloe barbadensis. The minimum inhibitory concentration showed inhibition of the growth of S. aureus and Salmonella spp. at specific concentrations. The hydrogel therefore presents itself as an excellent potential curative cover of cutaneous lesions.

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Investigation of thermal behavior of Heliotropium indicum L. lyophilized extract by TG and DSC

Cited by 36 publications

References 11 publications

Physico-Chemical, Surface and Thermal Properties of Date Palm Pollen as a Novel Nutritive Ingredient

Physico-Chemical, Surface and Thermal Properties of Date Palm Pollen as a Novel Nutritive Ingredient

Antifungal Activity, Phytochemical Characterization and Thermal Profile of Anadenanthera colubrina (Vell.) Brenan

Polyacrylamide-Metilcellulose Hydrogels Containing Aloe barbadensis Extract as Dressing for Treatment of Chronic Cutaneous Skin Lesions

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